“We have some leads on it, but we haven’t gotten anything solid enough to make any sorts of arrests,” Higuera said. “We’ve got a little more work to do. Something like that usually doesn’t stay secret very long. It was obviously planned and obviously really destructive. I’m looking forward to catching them. We’ve got a pretty good chance of solving it.”

As of Thursday afternoon, Windsor police made no arrests.

WHS Principal Michelle Scallon said the school sends the message there are no senior pranks allowed.

“It was a mess. This was truly an act of vandalism,” Scallon said of the damage that is estimated at $2,500. “It kind of makes our hearts heavy. A lot of the kids were upset because this is not a representation of us. It wasn’t an organized senior prank. I think it was probably a handful of people. I’m not going to put this on the senior class.”

Scallon said she didn’t know if WHS students were involved.

“It’s disheartening. A lot of the seniors came up to me and said, ‘Mrs. Scallon, this is not us.’ ” Scallon said. “The police will continue the investigation, and we’re putting this behind us. We are going to continue and focus on the positive. It’s not funny. This is vandalism. This is not a prank.”

School security cameras show several of the vandals wearing hoodies with their faces covered at 2:30 a.m. Tuesday. School officials say they were on the camera footage for about 27 minutes.

Steve Denny, director of maintenance and operations for the Windsor-Severance Re-4 School District, said the damage estimate included $2,000 for the labor in cleaning up the red, blue, pink, white and green paint and $500 for the security camera that had paint over it. The paint also had to be cleaned up on the bricks and windows. The year 2014 was painted on the bricks outside the cafeteria.

Denny said he had 10 maintenance employees manning four pressure washers throughout the day.

“I’m not sure how they got it so high up on the windows and on the brick and all over the courtyard,” Denny said.

Denny said Hotsy pressure washers that heat the water just below 180 degrees, one from the town of Windsor and the other from the school district, as well as two gasoline pressure washers, were used in removing the paint.